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Discussion Starter · #82 ·
People often ask what they can do to speed up the filtering after they've added a scrubber, at least until their scrubber "catches up" and fixes thing. Here are some things:

Increase the lighting period in your display a few hours; this increases photosynthesis (filtering) of your corals, and also of the periphyton on your rocks, both of which will consume more nutrients out of the water.

Feed less, or break your current feedings into smaller ones (don't feed all at once). This is because each burst of feeding generates lots of ammonia/urea by the fish, and lots of ammonia from the respiration of the corals too. When all that ammonia goes into the water at one time, it goes straight to your glass and rocks, and is absorbed by algae anywhere nuisance algae can exist. A larger burst of ammonia from a larger feeding will support more algae throughout your system, but breaking your feedings into more smaller feedings will reduce peak levels of ammonia in your water before the ammonia can feed more nuisance algae.

Do one of these: Keep your sump vacuumed, or put a clean up crew there to break up the settled food particles into smaller particles that will circulate around to feed your corals and small fish. But don't do both.

Start (or do more) water changes. Not the most effective in the world, and is costly and a hassle, but it will help some until your scrubber is going.

Start (or do more) GFO. This is more effective than water changes if you use a reactor, and is much easier. If it causes your scrubber to grow less, then use less GFO. Once your scrubber is going, stop the GFO over the period of a few weeks.

Speaking of the periphyton on your rocks, don't move any rocks or change any flow on them; keep everything the same so your natural periphyton filter develops more on your rocks during the next year; this will help tremendously.

Of course, once your scrubber gets a hold on things, you should be able to reduce or eliminate these other filters.
 
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